Reputation
3,405
Top tag
Next privilege 5,000 Rep.
Approve tag wiki edits
Badges
1 6 24
Impact
~33k people reached

May
21
awarded  Good Question
Apr
28
comment how to calculate the covariance of sample central moments
You may have to refresh the browser window to see the update ...
Apr
28
comment how to calculate the covariance of sample central moments
I don't think R code will go down very well here. Suggest convert that to Mathematica code if you want some help with the simulation ...
Apr
28
revised how to calculate the covariance of sample central moments
Added requested result
Apr
28
comment how to calculate the covariance of sample central moments
I think you will need to show us your simulation to comment further on that component. I have added $Cov(\frac{s_1}{n}, m_3)$ to the above.
Apr
28
comment how to calculate the covariance of sample central moments
@BobHanlon The user's input is not a data set, but rather a symbolic statistic such as the sample variance which is itself a random variable. CentralMoment[list] does something very different.
Apr
28
answered how to calculate the covariance of sample central moments
Apr
28
revised how to calculate the covariance of sample central moments
fixed typesetting
Apr
28
comment how to calculate the covariance of sample central moments
It sure does relate to Mma ... in fact, calculating it without mma would be a nightmare.
Apr
19
revised Iterating distributions
added 183 characters in body
Apr
19
answered Iterating distributions
Apr
15
revised calculate variance of conditional sum of Normals
fixed typos
Apr
15
answered calculate variance of conditional sum of Normals
Apr
15
revised calculate variance of conditional sum of Normals
Made question standalone, without requiring having to go to another site to understand the context
Apr
12
revised Problem with AxesOrigin option in ListPlot
added 8 characters in body
Apr
12
answered Problem with AxesOrigin option in ListPlot
Apr
10
answered conditional expectation doesn't work with SmoothKernelDistribution
Mar
31
awarded  Yearling
Feb
18
comment Can Mathematica's random number generation be improved?
Yes - but your question is messy. A good question simplifies the problem down to 1 or 2 lines (if possible), and it is certainly possible to do so here. By contrast, your question appears lazy, because it just dumps lines and lines of code from whatever you were doing, without honing it down to the heart of the matter. 2 lines: no more. Further, your title asks if it can be FIXED, which infers that it is broken. But your question is not about quality, nor do you compare the quality of pseudorandom drawings generated, nor does your post suggest anything is broken.
Feb
18
comment Can Mathematica's random number generation be improved?
I don't get the point either. If you want to do a comparison, get it down to 2 lines of code. Do you really need to define num, ints, reals, mus, f, mf, rvs, gf ... just to do a timing test? Talking of efficient, who has time to look through all that?